Compressor



April 5 1927. 1,623,378

n W. W. BAVINGTON COMPRESSOR Y Filed Jan 2....1926 3 Sheets-Sheet l WITNESS: ATTORNEY l l 623,378 April 5 1927 w. w. BAVINGTON COMPRESSOR Filed Jan. 2. 1926 3 Sheets-Shea?l 2 I 16;( 17 57 E JJ" f I Waz/z'yfaa,

INVENTOR BY l I AI'I'ORNEY WITNESS:

April 5 1927.

' w.l w. BAVINGTON COMPRES SOR Filed Jan. 2. 192es sheets-sheet s ATTORNEY WITNESS:

- Patented Aipr. 5, 41927.

l conrnnsson.

A' Application jled'anuary 2, 1926. Serial No. 782,953.

This invention relates compressors or the like, 'and motion 1s utilized for pumping or the Huid in the desired manner.

to rotary pumps, wherein rotary The chief characteristic off the present ine" vention resides in the fact that the eiiiciency of thefpump does not depend upon its speed or centrifugal force, being capable of dis al view.

` cylinder 11 shownl in Figure 2.

yt'rolled in a manner scribed.

char ingv its full capacity regardlessA of its spec as well as automatical y compensatfor wear which might occur on the workingl parts. A

Anot er'importaiit 4object resides inthe Iuse of valves for controlling the inlet and the valves being -actuated by a rotor operated within the cyloutlet ports-v of the pump, inder, and which valves are constantly maintained in. contacting engagement with the periphery of the rotor dled by the pump.

.Figure 1 is a vertical longitudinal sectionlFigure 2 *a vertical transverse sectional Figure .3. is a sectional view online 3-3 ofFigure 2. l

F1 re 4 is an end view of the rotor show ing t e arrangement of the packing rings.

Figlne 5 is 'a perspective view of one'o the valves.

Referring tothe dicates a casting which is bored to provide a which' communicates through an opening 12 with a valve chamber 13. The inlet port is indicated at 14 and communicates with one side of the chamber 13. while the outlet port is from the other side ofthe chamber as clearly construction are employed `for controlling communication between thel respective inlet and outlet-ports throu h the cylinder 11, these valves preferably eing in the nature of slide valves indicated vat 16' and 17 respectively and arranged to operate in the cham ber 13.v These valves are 'actuated or contobe hereinafter de-l Arranged within the cylinder 11 is an ecthrou hout its entire length, the eccentric also ing coextensivein length with ythe cylinder, the ends of the 'latter' by the heads 19 of the structure lclearly shownl in Figure 1. The slot in the eccentric is indicated atl 20 and this slot 'is provided handling yin spaced concentric relation by the fluid hanf drawings in detail, 1 0 `in-y indicated at 15 and leads' Valves of any suitablev vide for a dl the sliding type, perating being closedv .to receive the power shaft 21 and a comparatively short shaft 22. The latter extends throughout the entire length of the cam as shown in Figure 41. The power shaft -21 is 'preferabl provided with a liatside or portion 23, t us defining a recess to shaft 22, the latter reposing upon the tiat 'side 23 vas clearly illustrated in Figures' 1 and 2. This construction and arrangement I, l 1,623,3`7a iiru'rian srATEs'fPA-'rE-NTOFFICE.

receive the of parts is employed to rotate the eccentric 18, motion being transmitted from the latter to the rotor 24. The rotor 2l is arranged about the eccentric 18, and interposed between these parts is an annular series of anti-frictional rollers 26 by means of which motion is transmitted from the eccentric to the rotor` causing the latter to roll about the cylinder 11.

In other words when power is applied to the shaft 2l, the latter will have a tendency to revolveA in its bearings 27, the shaft22 lreposes upon' the tlatside 23 of the 'power Shaft, the said shaft 22 will be moved with the shaft 2l causing the eccen- -tric 1.8 to rotate, this motion being transmitted through the roller bearings 26 to the rotor as above slated. The flat side or portion 23 of the shaft 2li acts as :uwedge trying to pass the shaft 22, thus causing the *rotor to he constantly moved outwardly against the wall of the cylinder. This movement of the rotor also automatically compensates forgany wear which might occur in anyv of the working parts. This fact coupled with the fact that the opposite ends of the rotor are 'equipped with spring pressed packing rings 28 effectively held in contacting engagement' with the adjacent heads 19. pro- -leak proof structure. By the use of anti-frictional bearings'26, it will be noted that the rotor'does not revolve within the cylinder which 4would cause-unnecessary sliding friction, but on the contrary rolls' around the cylinder-,thus only having rolling fric-y tion to contend with. 'tated in either direction, and the valves arranged to permit of this reverse movement of the rotor. i

The valves 1 6 and 17 respectively are of 'bei' 13-4 and having their adjacent sides'or faces in contacting engagement. The outer side of each valve is formed with spaced recesses 30, so that when either valve is 1o\v.- ered orv moved 'within the cylinder, communication is established between` the adjacent within the chainbut inasmuch as 'l The pump can be rolll) ' allowed to enter the l vid I f fed into the .cylinder 31 operat 'va ves, and formed u arrecess. ese valves are actuated or controlled bythe rotor 24,' having their lower ends constantly contacting the periphery of the rotor, so that as the latter moves away from the top' p ortion of the cylinder wall, or in other wor which it occupies in Figure 2, the. valves are cylinder to establish communication between the 'respective port lport and said cylinder through the particand the cylinder in the manner above stated.

In practice, the fluid to be handled bythe pump or compressor isa'dmitted through the inlet port 14, andwhen the high point ofV the rotor passes the valves, both ofthe latter will slide partly 4Within the cylinder, thereby allowing the fluid to der behind the rotor. 'Atthe saine time whatever fluid is being driven ahead of the rotor will escapev or pass out through-the port 15, the 'valve always being 'in contact with the eriphery of the rotor. kFor this purpose, cylinder 31 ton 32,' the latter inclu -ing a stem 33 which enters the chamber 13 and terminating to provide a pointed extremity 34. A certain amount-of fluid handled by thepuinp is conve'yed to the cylinder 31 through a pipe 35 which establishes communication between the outlet port 15 'as clearly illustrated in Figure 2, thus we have the same pressure jon the piston 32 as the discharge pressure at one side of the pump. -The pressure inthe in which 0 crates a sliding'pisholds the latter downwardly so that the valves 16 andl'? aremaintained in constant engagement with the periphery of the rotor.v

the valves is suchl that he action lof even, thatis to say that they'are not always one or`the other will be slightly higher or lower than the other, but in order to proe an equal pressure from the piston o`n both of these valves, I employ a link 36 desi ed to straddle the upper ends of the Awith a central depression to' receive the ointed extremity 34 of the piston'rod 33, t e link 36 is `flexible for t e purpose just stated. f l A en pump' air or any as oil wil also be forcedmhrough the dpeiiing 28 against thel ends ofthe valve,` a perfect oil seal against leakag of this-oil finds its way into the it will bedrained ltherefrom through a pipe 37 and returned to `the suction. Oil being cylinder through the suction a seal at the line of exit, der and discharge valve,

gas to prewill also form between :the cylin and this oil forces out. all Iof the `vent lany expansion. Oil will throuh the small ports 3 8v and.39` to maintain t adjacent working `parts properly lubricated. Shoull any'pressure within the cylinder 31 find its way downinto the `the pipe 37 into the While itis believed that fromythe fore-v ds from. the position cylinder, a rotor d provide a structure with a s`mall` tion between der to ngupon the piston' 32 reposing upon the fiat by said rotor through the in-l isi` caused' to lve chamber said cylinder, slide valves operating in said chamber to control ports and said said valves being actuatedby said" strumentality` of said bearing y .roll about the cylinder, a va chamber13,"

tion-side of the pump cylinder,

also passactuatedtmeans for ho chamber 13, it will pass therefrom through port 1 going description, the nature and 'advantages of the invention will be readily aent, I desire to have it understood t at I .do not limit myself cylinder having .inlet and outlet ports at th e opposite sides `thereof, an eccentric arranged to rotate within the isposed in spaced concentric relation to said eccentric, anti-frictional Pal" bearings positioned between thel eccentric rotor, means including said bearandsaid transmitting motion from the ecings for arranged above the cylinder and communieating therewith, slide valves said chamber and controlling communicasaid ports and said cylinder, a drainpipe establishing communication between the valve chamber and the inlet port. A

of the cylinder, a 4second cylinder disposed above said chamber, a piston arranged to operate in thelast mentioned cylinder, means for conveying a pressure from the outlet side of the ump to the second mentioned cylinhold the piston depressed, and a connection between the piston and said valves whereby 100. the latter are constantly maintained.

`in contacting engagement with the periphery of the rotor as and for the purposej specified; f 2. In a'pump, a cylinder having an inlet and outlet port at the opposite sides thereof, an eccentric arranged to rotate within: the l vcylinder and longitu inally slotted, a rotor disposed in spaced' concentric-relation with said eccentric, anti-frictional bearings positioned between the eccentric and said rotor, a power shaft passed through said eccentric and having va flat( side, a secon'd'shaft arranged within the slot of said eccentric and side of said `power shaft, where communication between the cylinder,

rotor, a drain pipe establishing communication b etween the valve chamber .and thesucand pressure ,In testimon whereof I affix 111% signature. A

GTON.

" FW TER W. BA 

